Combined door knob and bell.



PATENTED SEPT. 19, 1905.

T. WEST. COMBINED DOOR KNOB AND BELL.

APPLICATION FILED OCT. 1. 1904.

UNITED STATES PATENT oEEIoE.

Specification of Letters Patent.

. Patented Sept. 19, 1905.

Application filed October 1, 1904. Serial No- 226,825.

To all whom it may concern.-

Be it known that I, THoMAs WEsT, a citizen of the United States, residing at Williamson,

in the county of Mingo and State of West Virginia, have invented a new and useful Improvement in a Combined Door Knob and Bell, ofwhich the following is a specification.

This invention is a combined door knob and bell, particularly characterized by the fact that the bell is manually operated and requires no springs or the like, by the further fact that the parts are few and small and capable of cheap construction, and by the further fact that the bell may be thrown out of action if and when desired.

The device is illustrated in the accompanying drawings, in which Figure 1 is a side elevation. Fig.2 is a longitudinal section. Fig. 3 is a section on the line 3 3 of Fig. 2.

Referring specifically to the drawings, 6 indicates the outer knob, and 7 the inner knob, the latter being hollow and made of bell-metal or the like, so as to sound when struck. These knobs are connected by the spindle 8, which is hollow. A rod 9 extends through the outer knob and the spindle and into the inner or bell knob. At the outer end it has a thumb-piece 10, whereby it may be turned, and at the inner end it has a cog-wheel 11, which meshes with the pinion 12, which is slidable upon a squared portion of the arbor 13. A spring 14, coiled around the arbor and confined between the pinion and a pin 15, normally holds the pinion in engagement with r the cog-wheel 11. The arbor 13 finds its bearings in the back of the knob and in a bridge 16, through which it projects at one end, and said end carries arms 17, upon which the strikers are mounted. The strikers comprise rings 18, carried upon pins 19 at the ends of the arms. The rings are loose on the pins that is, they are of greater inner diameter than the diameter of the pins, but are held on the pins by heads or washers 20.

The bridge 16 is held in place by screws 21, which enter the body of the knob. A cap is indicated at 22 covering the cavity of the bell or knob. This cap is supported on the bridge by a screw 23, with a spacing sleeve 24 thereon to preserve the distance.

As stated above, the pinion 12 is normally held in mesh with the cog-wheel 11 by action of the spring 13. It may be thrown out of mesh by a sliding pin 25, which works through a hole in the back of the knob. When the pin is shoved in, its end strikes the pinion 12 and pushes it along the shaft until out of engagement with the cog-wheel, and the tight fit of the pin in the'hole in this position holds it out of contact as long as desired, so that the bell cannot be rung. To throw it in gear, the pin 25 is withdrawn. It is to be noticed that the pin 25 cannot come all the way out, because it is made of such length that its outer end will strike the door before complete withdrawal. Consequently there is no clanger of the pin coming out and being lost after the knobs are put in place on the door.

To ring the bell, the turn of the thumbpiece by means of the gearing shown rotates the arbor 13, and by reason of centrifugal force the strikers 18 fly out asfar as they can and will strike the projection 7 011 the inside of the bell-knob, and thus sound the bell.

Ordinarily the strikers hang down or away,

so that they do not touch the projection, and consequently do not sound the bell when the knob is turned in its ordinary use.

What 1 claim as new, and desire to secure by Letters Patent, is-

In a combined door knob and bell, in combination, a pair of knobs and their connecting hollow spindle, one of the knobs being a bell, a turning rod extending through the other knob and spindle and projecting at its inner end into the bell-knob, a gear-wheel on said inner end, a bridge-piece 16 extending over said wheel, within the knob, an arbor having bearings in the bell-knob and bridge-piece at one sideof the turning rod and having a pinion loose thereon meshing with the said gearwheel, arms extending laterally from the said arbor and carrying centrifugal strikers ar: ranged to hit the bell, and a pin extending into a hole in the back of the knob and of greater length than the space between the knob and the door and movable against said pinion to disengage the same from the gearwheel.

In testimony whereof I have signed my name to'this specification in the presence of two subscribing witnesses.

THOMAS WEST.

Witnesses:

' S. W. NEWBERRY, T. W. NEWBERRY. 

